Maryland, 2003

Heavy Rain in Maryland, August 5, 2003

August 5, 2003 · NWS PHI · 1 event in 1 county or zone

Thunderstorms with heavy rain produced poor drainage flooding in and around Easton. 26 inches of rain fell within 90 minutes.

Where it happened

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS PHI wrote it up.

Thunderstorms with heavy rain produced poor drainage flooding in and around Easton. In Easton, 1.26 inches of rain fell within 90 minutes. A couple of roads were closed because of flooding including Commerce Drive. About five vehicles were trapped in flood waters.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Aug 5, 2:02 AM EST, 7 hours 28 minutes earlier.

Area forecast discussion, Aug 5, 2:02 AM EST, 7 hours 28 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
302 AM EDT TUE AUG 5 2003

OVERALL PATTERN CONTINUES. A RATHER VIGOROUS S/W IS ROTATING UNDER
THE LARGE TROF AND SHOULD MOVE THROUGH THE AREA LATE MORNING THROUGH
EARLY TONIGHT. THIS SHOULD SET THE STAGE FOR WIDESPREAD TSTM/RW.
WITH THE LAST FEW DAYS SOME AREAS HAVE BEEN HIT HARD WITH PRECIP SO
WILL ISSUE FFA FOR OUR NORTHERN TIER ZONES.

SOME OF THE HEAVY RAIN REPORTS FOR LAST 12 HOURS...
COLUMBIA NJ 3.90   LINCOLN PARK NJ 2.14  LEAVITT FALLS PA 1.89

REST OF FORECAST IS A REPEAT OF PREVIOUS DAYS. DIURNAL PRECIP WITH
NEAR NORMAL TEMPS AND HIGH HUMIDITY.

MARINE...SCA FOR SEAS REMAIN IN EFFECT FOR COAST.

FCSTID =   10
MPO   78  65  77  66 /  60  40  30  30
ABE   84  70  82  70 /  60  40  30  30
RDG   84  70  83  70 /  60  40  30  30
PHL   86  73  86  73 /  50  40  20  20
12N   83  69  81  70 /  60  40  30  30
SMQ   85  70  85  72 /  60  40  30  30
TTN   85  70  85  72 /  60  40  30  30
MIV   85  70  85  72 /  40  30  10  10
ACY   82  73  82  73 /  40  30  10  10
ILG   85  72  86  72 /  50  40  20  20
DOV   86  72  85  72 /  40  30  10  10
GED   86  73  85  73 /  40  30  10  10
ESN   86  72  85  72 /  40  30  10  10

.PHI...
DE...NONE.
MD...NONE.
NJ...FLOOD WATCH NJZ01,07,08 THIS AFTERNOON AND EVENING.
PA...FLOOD WATCH PAZ54,55,61,62 THIS AFTERNOON AND EVENING.
MARINE...SCA ANZ450>455 FOR SEAS.

ZEV
Hazardous weather outlook, Aug 5, 5:24 AM EST, 4 hours 6 minutes before
DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ054-055-
060>062-067>071-051115-

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
420 AM EDT TUE AUG 5 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL AND SOUTHEAST
PENNSYLVANIA...DELAWARE...THE NORTHERN MARYLAND EASTERN SHORE...AND
NEW JERSEY EXCLUDING THE FIVE NORTHEAST COUNTIES.

.DAY ONE...TODAY

A FLOOD WATCH HAS BEEN ISSUED FOR THE LEHIGH VALLEY...THE POCONO
MOUNTAINS AND NORTHWEST NEW JERSEY.
THERE IS ALSO A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THE ENTIRE
AREA.
BIGGEST THREATS ARE EXCESSIVE RAINFALL AND LARGE HAIL ALTHOUGH GUSTY
WINDS BELOW 45 MPH CAN BRING DOWN SOME TREES WITH THE WET GROUND.
THERE IS A MODERATE RISK OF RIP CURRENTS ALONG THE COAST.

.DAYS TWO THROUGH SEVEN...

THE THREAT FOR SHOWERS AND THUNDERSTORMS WITH HEAVY RAINS EXISTS
EACH DAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

WN

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 heavy rain. Local standard time, as filed.

Heavy Rain, Talbot

When
August 5, 9:30 AM EST to 11:00 AM EST
Where
Talbot County, Easton
Reported by
NEWSPAPER
Coordinates
38.749, -76.179 (the zone’s center; the record gives no point)

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Maryland in 2003Every state in 2003This day in weather historyWarnings in Maryland, August 2003

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5333130.